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Maintenance HDSL2 for General Distribution Installation and Maintenance Practice

52 61223HDSL2L2-5B

Loop loss per kilofoot for standard wire gauges is summarized in Table 12.

An approximation for the maximum amount of wideband noise as measured using an F filter

on an HDSL2 loop having 35 dB loss is < –47 dBrnF.

An approximation for the maximum level of impulse noise as measured using an F filter on an

HDSL2 loop having 35 dB loss is

≤ –38 dBrnF.

For additional information on these and other deployment issues, refer to Supplemental

Deployment Information for HDSL, HDSL2, and HDSL4 (HDSLx), document number

61221HDSLL1-10.

NOTE

These approximations are to be used as guidelines only and may

vary slightly on different loops. Adhering to the guidelines should

produce performance in excess of 10

-7

BER.

MAINTENANCE

The HDSL2 products detailed in this document do not require routine maintenance. In case of

equipment malfunction, use the front panel bantam jack connectors to isolate the source of

the problem.

ADTRAN does not recommend that repairs be performed in the field. Repair services may be

obtained by returning the defective unit to ADTRAN. For more information, refer to “Appendix

D, Warranty”.

Table 12. HDSL2 Loss Values

Cable Gauge Cable

Type

Temperature

68°F 90°F 120°F

26 PIC 3.902 4.051 4.253

26 Pulp 4.030 4.179 4.381

24 PIC 2.863 2.957 3.083

24 Pulp 3.159 3.257 3.391

22 PIC 2.198 2.255 2.333

22 Pulp 2.483 2.545 2.629

19 PIC 1.551 1.587 1.634

19 Pulp 1.817 1.856 1.909

1 2 ... 57 58 59 60 61 62 63 64 65 66 67 ... 89 90

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